William Optics Reducer Flattener

This reduction factor shortens your telescope's focal length by 28%, which widens your field of view significantly. It allows you to capture larger deep-sky objects, like nebulae or galaxies, that might otherwise be too large to fit within your camera's sensor frame.

While it is designed for refractor telescopes, compatibility depends on your specific telescope's focal length and back-focus requirements. It is best used with William Optics refractors, but you should verify your telescope's back-focus distance to ensure the flattener can achieve proper focus with your camera setup.

Yes, that is its primary secondary function. By flattening the field of view, it corrects the natural curvature inherent in many refractor lenses, ensuring that stars remain sharp and pinpoint-accurate from the center all the way to the corners of your sensor.

This reducer flattener features a standard M48x0.75mm thread for your camera connection. This is a common size for many dedicated astronomy cameras and DSLR/mirrorless T-rings, making it easy to integrate into most imaging trains.

No, it is designed with a 2-inch connection interface, so it slides directly into most standard 2-inch telescope focusers. Just ensure your focuser has enough travel to accommodate the added length of the flattener.